JPS6152642B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tilling device that reduces tilling resistance, makes tilling work more convenient, and prevents the tiller from sinking excessively during tilling work.

Here, in the specification, tilling resistance is a general term for frictional resistance, compression resistance, condensation force, adhesion force, shearing resistance, etc. applied to the tilling barrel or tilling blade during tilling work.

Traditionally, tillers have been installed on both sides of the drive case of agricultural power vehicles such as power tillers and tractors.
There are various shapes such as round cross section, octagonal cross section, and hexagonal cross section. The round-shaped tilling tube could not be used to till the soil at all by itself, which was a major factor in increasing tilling resistance. With the octagonal, hexagonal, etc. tilling tube, 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.

By the way, the Taylor type tiller, which performs tilling work while traveling, has a small drive source, so it has a large tilling resistance in sticky or wet soil, and is unable to till the soil, making the tilling work extremely inefficient. There was a drawback. 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 tilling device in which a tilling blade is attached to each large surface of a triangular tilling tube, which has a substantially equilateral triangular cross section, each of which is a large surface, and a small surface is formed at the corner of the adjacent large surface. Alternatively, a plurality of triangular tilling tubes each having a substantially equilateral triangular cross section and each face having a large face part and having small face parts formed at the corners of the large face part that are in contact with each other are connected in the axial direction, and adjacent triangular tillers are arranged in series in the axial direction. By creating a suitable angular phase difference between the tilling tubes in planes perpendicular to the axial direction, and creating a tilling device with tilling blades attached to the large surfaces of each of the triangular tilling tubes, this can be used for agricultural power running. When it is attached to both sides of the drive case of the machine and tilled, it scoops out the soil near the corner of the large side and small side and throws this clod backwards, which significantly reduces the tilling resistance and is useful for agriculture. The power running machine can move forward easily, and plowing work can be done extremely efficiently, eliminating the above-mentioned drawbacks.
Even though the cross section is approximately equilaterally triangular, the presence of the facets prevents it from sinking excessively during tilling, improving forward performance.Furthermore, by arranging multiple triangular tillers in series in the axial direction, tilling efficiency is further improved. can be improved, the tillage width can be widened as appropriate, and
The purpose is to provide a thin plate material with a strong overall structure.

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

Reference numeral 1 denotes a triangular tilling cylinder made of metal, which has a substantially equilateral triangular cross section, and its three faces are divided into large face parts 1a, 1a, 1a.
A small surface portion 1b is formed at each corner of the adjacent large surface portions 1a, 1a. The cross section of the large surface portion 1a and the small surface portion 1b is flat (the first
Figures 3 and 4, solid lines in Figures 7 and 9,
(see FIG. 12), or may be slightly bulged in a convex shape (see the dotted line in FIG. 4, FIG. 5), or may be slightly concave (see FIG. 6). Although not shown, the large surface portion 1a is made slightly convex, and the small surface portion 1a is made slightly convex.
b may be made slightly concave, or vice versa. It is experimentally preferred that the width of the large surface portion 1a is approximately three times or more the width of the small surface portion 1b. A through hole 2 facing in the axial direction is bored in the center of the cross section of the triangular tilling cylinder 1. The through hole 2 is generally formed of a pipe (see drawings). The triangular tilling tube 1 may be configured with only one piece on one side of the drive case 8 (see FIGS. 1 and 2), or a plurality of pieces in the axial direction (in the embodiment, two pieces).
) consecutively provided (Figs. 7 to 10)
(see figure). When a plurality of these are connected in succession, the adjacent triangular tilling tubes 1 and 1 are configured to have an appropriate angular phase difference in a plane perpendicular to the axial direction (see FIGS. 7 to 10). ). That is, the second triangular tilling tube 1 is attached to the first triangular tilling tube 1 from the drive case 8 side at an appropriate angle (approximately 20 degrees to 70 degrees, approximately 60 degrees in the embodiment).
The phase difference (degrees) is given. Although not shown, the third triangular tilling tube 1 is also given an appropriate angular phase difference with respect to the second triangular tilling tube 1. In addition, in the first embodiment in the case of continuous operation,
Adjacent triangular tilling tubes 1 and 1 are fixed to each other by welding or the like (see FIGS. 7 and 8). in this case,
The through-hole 2 may be formed only in the first triangular tilling tube 1 (see FIG. 8). In addition, in a second embodiment in which they are connected in series, a triangular joint tube 3 whose cross section is the same as that of the triangular tilling tube 1 and slightly smaller in size is fixed to the end of the second triangular tilling tube 1. , Correspondingly, a gap 4 is formed in the large surface part 1a and the small surface part 1b of the first end of the first triangular tilling tube, and the triangular joint tube 3 can be slid in the axial direction within the gap 4. The width is adjustable as a whole (see FIGS. 9 to 11). If they are connected in this way, a connecting shaft pipe 5 may be provided (see Fig. 10), or the pipe forming the through hole 2 of the first triangular tilling pipe 1 may be placed on the side of the second triangular tilling pipe 1. This protruding portion may be used as the connecting shaft tube 5 (see FIG. 11). Alternatively, the triangular joint tube 3 may be fixed to one end of the first triangular tilling tube, and the gap 4 may be formed within the one end of the second triangular tilling tube. After adjusting the width, it is fastened using pins, holding bolts, etc.
Reference numeral 6 denotes a sheath-like holder, which is fixed to each of the large surface portions 1a, 1a, 1a of the triangular tilling tube 1 so as to have an angular phase difference of about 120 degrees, and to be offset from each other in the axial direction. 7 is a tilling blade, which has a triangular tilling tube 1 as a vertical cut part V halfway from its mounting base side.
It is perpendicular to the axial direction of the triangular tilling tube 1 and is curved in the orthogonal plane, and the cross section H on the tip side faces right or left along the axial direction of the triangular tilling tube 1 and is bent approximately horizontally. It has a three-dimensional curved surface (see Figures 1 to 3 and 7). Further, the vertical cut portion V may be formed in a straight line, so that the whole is L-shaped (see FIG. 12). The mounting base of the vertical cut portion V of the tiller blade 7 is fixed to the holder 6 by welding or the like, or is removably provided with bolts, nuts, etc. (see drawings). Although not shown, the attachment base of the tilling blade 7 may be attached directly to each of the large surface portions 1a, 1a, 1a of the triangular tilling tube 1 by welding or the like. Such a triangular tilling tube 1 with a tilling blade 7 is referred to as a tilling device. The tilling device is detachably installed symmetrically through a through hole 2 on a tilling shaft 9 that protrudes on both sides of a drive case 8 that extends below an agricultural power running machine such as a tiller or a tractor. (See Figures 1 and 2).

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 and is a large surface portion 1a, and a small surface portion 1b is formed at the corner of the adjacent large surface portions 1a, 1a.
By attaching the tilling blades 7 to the large surface portions 1a of the triangular tilling cylinder 1, a large effect is achieved in which tilling resistance can be significantly reduced.
To explain this point in detail, the triangular shape is the smallest in a rectangular cross section, and the soil scooping angle α of the triangular tilling tube 1 is considerably smaller than the soil scooping angle of a tilling tube having an octagonal or hexagonal cross section. Here, the soil scooping angle α is the angle between the line connecting the center O of the triangular tilling tube 1 and the end of the large surface portion 1a and the outer surface line of the cross section of the large surface portion 1a. 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)
The blade acts like a tiller, gouging the soil and throwing many clods of soil backwards. Therefore, conventional tilling tubes such as round ones have little resistance to compressing the soil,
The condensation force acts strongly and increases the tilling resistance, but in the present invention, the tilling blade-like action can significantly reduce the tilling resistance such as the resistance to compress the soil, and the progressability can be improved. . Furthermore, by acting as a tiller blade, it was originally necessary to cut the soil, pick up soil clods, throw them backwards, etc. with just the tiller blade, but the triangular tiller tube 1 The inside of the virtual circle has already been tilled, and from now on, only the outer periphery will be tilled with the tilling blade 7, which can significantly reduce tilling resistance such as cutting resistance, and the tilling work with the triangular tilling tube 1 and tilling with the tilling blade 7. This works synergistically with other tasks, making it possible to achieve extremely high tillage efficiency. With this simple structure of approximately equilateral triangular cross section, even if the driving source is small or the soil is viscous, it can reduce tilling resistance and make tilling work extremely efficient. We can provide this groundbreaking invention. 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. Therefore, during tilling work, the tilling section can be prevented from sinking too much into the soil, and can be moved forward in a substantially flat manner, resulting in good maneuverability. 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 in sandy soil, diatomaceous earth such as volcanic ash, etc., without unnecessarily idling.

Furthermore, in the invention of claim 2,
A plurality of triangular tilling tubes 1 of the invention as set forth in item 1 are arranged in series in the axial direction, and an appropriate angular phase difference is generated between adjacent triangular tilling tubes 1, 1 in a plane perpendicular to the axial direction. As the tilling rotation increases, the large surface portions 1a of the continuous triangular tilling cylinders 1, 1...
The action of gouging the soil at the end points (like a tilling blade action) becomes almost continuous when viewed from the side, resulting in extremely smooth tilling rotation. To describe this effect in detail using two consecutive triangular tilling tubes 1, 1, as the tilling rotates, the soil is gouged at the end of the large surface 1a of the first triangular tilling tube 1, and this Immediately after, scoop out the soil at the end of the large surface 1a of the second triangular tilling tube 1, and repeat this (the order of the first triangular tilling tube 1 and the second triangular tilling tube 1 may be reversed). ), the interval at which the soil is scooped out is simply 1
Compared to the case of tilling with a single triangular tiller 1, the time is shortened, and the action of gouging the soil becomes almost continuous, making it possible to achieve a tilling state with extremely smooth rotation. Both can further improve tillage efficiency. Moreover, even if the tilling width becomes wider, it can be handled by connecting a plurality of triangular tilling tubes 1 in series. Furthermore, the other configurations are the same as the invention described in item 1, and the same effects are achieved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the present invention symmetrically provided, FIG. 2 is a front view of FIG. 1, FIG. 3 is a side view of the present invention, FIG. 4 is an enlarged sectional view of the present invention, and FIG. 5 , 6th
The figure is a side view of another embodiment of the triangular tilling tube of the present invention.
Fig. 7 is a perspective view of the present invention in which triangular tilling cylinders are connected in series, Fig. 8 is a sectional view of Fig. 7, and Fig. 9 is a perspective view of the main part of the connection point where the triangular tilling cylinders can be slidably adjusted. , FIG. 10, and FIG. 11 are sectional views of the present invention in which triangular tilling tubes can be slidably adjusted relative to each other, and FIG. 12 is a partial perspective view of another embodiment of the present invention. 1...Triangular tilling tube, 1a...Large surface part, 1b...
Small side part, 7... Cultivating blade.

Claims (1)

[Scope of Claims] 1 A tilling blade is attached to each large surface of a triangular tilling tube which has a substantially equilateral triangular cross section, each of which is a large surface, and a small surface is formed at the corner of the large surface that comes in contact with phosphorus. A tillage device characterized by: 2. A plurality of triangular tilling tubes each having a substantially equilateral triangular cross section, each of which is a large surface portion, and a small surface portion formed at the corner of the large surface portion that is in contact with each other are connected in the axial direction, and the adjacent triangular tilling tubes are connected to each other. A tilling device characterized in that a suitable angular phase difference is generated in a plane perpendicular to the axial direction, and a tilling blade is attached to the large surface of each of the triangular tilling tubes.