JPH0475968B2 - - Google Patents

Description

[Detailed Description of the Invention] (Object of the Invention) This invention combines a plow device that is necessary when collecting earth and sand from fields, etc., or digging trenches in fields, etc., and the plow device. The present invention relates to a plow cart, and particularly to provide a plow device having a novel structure that enhances the ability of the plow device to dig into the soil surface, and a bucket cart equipped with the plow device.

(Prior art) Field work, especially leveling work for rice fields and digging work to remove wastewater from fields, are extremely important work for farmers, and the work involved is extremely demanding. It is something. Therefore,
For example, the invention of Utility Model Publication No. 58-35738, which has already been developed by the applicant, and the invention of Utility Model Publication No. 60-
32222 and Utility Model No. 58-171947, a plow is attached to the rear or front of a bucket that is connected to the rear of an agricultural tractor through a three-point link, and the plow's chisel is used to raise the bucket. Devices that capture soil and sand have been developed, and some of them are already in practical use.

In the case of these items that have already been developed,
Most plows have a structure in which the entire plow is inclined at a predetermined angle with respect to the ground, and the blade edge is curved and shaped so that it is slightly horizontal, so the blade edge of the temporary plow is Even if the plow is sharp, depending on the soil quality of the field, the plow may not be able to penetrate the ground enough, and the plow may sometimes slide on the ground surface, making it difficult to collect soil or dig. This often results in the inability to achieve the intended purpose.

Another proposal for making this earth and sand collection and digging process smoother is to form a cutting edge on the back reinforcing plate of the plow body, as shown in Utility Model Application No. 138960/1983, to remove earth and sand. There are some plows that have a cut in them to make the forward movement of the plow smoother, but these cut into the soil and have the function of forcibly drawing the tip of the plow body downwards regardless of the quality of the soil. In the end, it did not solve the problems mentioned above.

The present invention was developed and completed in order to cope with such a situation, and the details of its configuration are as explained below.

(Structure of the Invention) As clearly understood from the representative embodiment of the present invention shown in the drawings, the present invention provides a method in which the number of times the plow reaches a predetermined rear position in the front and rear direction with respect to the plow cutting face 11 is at least A claw piece 21 is formed on the tip side of the back of the plow body 1, which is pivotally attached and supported so as to be freely controlled, or at least the tip is made of a rod-shaped material having a cross-sectional dimension larger than the thickness of the material constituting the plow body. Resistance protrusion 2 with a larger cross-section of the surrounding parts
This is a plow device with a protruding structure.

The plow body 1 is applicable to all types of plows, including those with a regulated shape as shown in the examples described below, as well as those with a left-right symmetrical shape that is pointed at the center of the tip, which has been generally adopted so far. .

This plow main body 1 has a plow digging surface 1.
It must have a structure that allows it to freely rotate to a predetermined rear position in the front-back direction with respect to 1, and the means for restricting rotation at the rear predetermined position will be explained below. In addition to typical embodiments, although not particularly shown in the drawings, a cutout or a protrusion may be formed between the pivot pipe 14 installed laterally at a suitable position on the back of the plow main body and its pivot shaft. The structure of the present invention also includes a structure in which rotation of the pivot tube 14 is restricted, or a structure in which the back surface of the plow body 1 is directly received at a predetermined position.

In addition to having a structure in which a claw piece 21 is formed on the tip side, the resistance protrusion 2 has a structure in which a claw piece 21 is formed on the tip side, and although it is not particularly shown, the upper end is simply integrated into the back surface of the plow body 1 at a suitable place, and the thickness of the material forming the plow body is determined. Of course, there is no problem in forming it with a rod shape having a larger cross-sectional dimension, for example, a width or diameter of about 10 mm.

(Preferred Embodiment 1) As shown in the examples shown in FIGS. 1 to 4, the plow device of the present invention has a plow body 1 in which the planar shape of the plow chisel surface 11 is approximately trapezoidal,
One tip is set back from the other tip, and on the side edge of the retreated side there is a side piece 12 that continues from the tip to the rear end, and on the opposite side edge,
It has a special asymmetrical shape in which side pieces 13 that do not reach from the tip to the rear end are formed respectively, and a reinforcing piece 15 is erected approximately at the center of the back of the plow body 1 from the tip to the rear end. The reinforcing piece 15
A horizontal rod 3 whose rear end is regulated at a predetermined position behind the plow body 1 (the illustrated horizontal rod 3 is realized by also serving as a horizontal frame of a bucket support frame 5 of a bucket cart 4, which will be described later). However, it is of course possible to form a dedicated one), so that the rotation of the plow body 1 at a predetermined rearward position can be restricted by coming into contact with it.

Further, in this embodiment, the plow device has a reinforcing piece 15 erected approximately at the center of the back surface of the plow body 1 from the tip to the rear end, and the reinforcing piece 15 is provided at the rear end of the reinforcing piece 15.
An example of a structure in which a resistance protrusion 2 made of a member separate from 5 is attached is shown.

(Preferred Embodiment 2) In the embodiment shown in FIGS. 5 to 7, the reinforcing piece 15 itself, which stands approximately at the center of the back of the plow body 1, is processed and formed in advance to form a resistance protrusion that is integrated with the reinforcing piece 2. 2
A claw piece 21 is formed at the lower end of the resistance protrusion 2.

(Other Related Inventions) On the other hand, the plow device of the present invention, which has a typical structure as exemplified in the first and second embodiments above, is provided with an agricultural tractor (not shown) as shown in the embodiment in FIG. 1) They are placed in front near the lower end of the opening 41 formed in the bucket 4 connected to the rear, and are combined to form a sand excavator and a collecting bucket.

In addition to the embodiments described below, the openings 41 formed in the bucket bag 4 naturally include known openings that are formed only on the front wall 42 or the rear wall 43, and depending on the situation of each opening 41. Accordingly, the plow apparatus of the present invention is installed by adopting an optimal combination structure.

In the figure, 44 is the side wall of the bucket 4, 45 is the same side wall attachment, 46 is the same rear wall, 47 is
51 is the lower link connection portion of the three-point link of the agricultural tractor in the bucket support frame 5; 52 is the top link connection portion; 6 is the reinforcing frame;
A stopper handle for regulating the placement and fixation of the bucket 5 on the bucket support frame 5 and reversal operation;
7...The lower links of the three-point link of an agricultural tractor are shown.

(Preferred Embodiment 3) Bucket 4 to which the plow device of the present invention is attached
As in the embodiment shown in the drawings from FIG. 8 onwards, this bucket bag has an L-shape or a substantially L-shape in longitudinal section and has at least a front wall 42 and a bottom plate 43, and the opening 41 is formed at a position , and is restricted to a portion extending between the front wall 42 and the bottom plate 43.

In the illustrated example, the structure is curved from the lower end of the front wall 42 to the front end of the bottom plate 43, but the structure is not necessarily limited to this embodiment. Of course, there is no problem with a structure in which the two are joined at right angles.

The plow device is constructed by inserting a pivot shaft (supported by the bucket support frame 5) into a pivot tube 14 formed on the back surface of the plow body 1 toward the front near the lower end of the opening 41. It is mounted so that it can freely rotate up to a predetermined rearward range.

(Operation and Effect) The plow device of the present invention having the above-described configuration, and the earth and sand digging chisel and sampling bucket equipped with the plow device have the following features.

First, in the case of a plow device, the plow body 1
However, since the plow body 1 can freely rotate up to a predetermined range rearward in the front-rear direction with respect to the plow chisel face 11, the cutting edge of the plow body 1 naturally moves forward (upwards) when the plow device is not in use. ), the blade edge will not inadvertently stick into the ground 8 and interfere with placing it on the ground, making the handling of the plow extremely simple and making it possible to rotate the blade edge into the ground 8. There will be no more pain.

Further, on the back side, a claw piece 21 is formed on the tip side, and a resistance protrusion 2 is made of a rod-shaped material having a cross-sectional dimension larger than the thickness of the constituent material forming the plow body 1 and has a large cross-section at least around the tip. When the plow main body 1, which is provided with a protruding blade and is rotatably pivoted to a predetermined rear range, is connected to the rear of an agricultural tractor and towed in the direction of the arrow, the blade edge of the plow rises up and does not dig into the ground 8. Even if it becomes
As shown in the embodiments shown in FIG.
As the plow moves forward in the direction of the arrow, the resistance protrusion 2, which has a larger cross-section at least around the tip, receives resistance from the earth and sand and naturally rotates the cutting edge of the plow body 1 toward the ground 8. This means that the state shown in FIG. 6 or 10 can be realized without fail.

This action continues while the resistance protrusion 2 is in contact with the ground 8, and the cutting edge continues to dig into the ground, causing the plow body 1 to rotate significantly backward. Finally, when the plow main body 1 has fully rotated within the regulated rearward rotation range, the rotation is stopped, and the earth and sand present in front of the resistance protrusion 2 is removed by the plow excavating face 11. 7 or 1.
As shown in Figure 0, the plow excavation surface 11 is kept at a predetermined angle with respect to the ground 8, which is the same state as in use of a so-called known plow device, and the earth and sand are reliably excavated. The Rukoto.

In this way, with this plow device, no matter what the soil quality of the ground 8 to be dug is, the presence of the resistance protrusion 2 ensures that the cutting edge is dragged into the ground 8. As a result, the tip of the plow bounces back onto the ground 8, causing inconveniences such as those that occurred with previously known plow devices, resulting in the inability to dig as desired. completely disappears.

On the other hand, it is possible to realize the resistance protrusion 2 by simply integrating a rod-shaped member with a cross-sectional dimension larger than the thickness of the constituent material forming the plow main body 1 on the back surface of the plow main body 1; As shown in
The plow main body 1 is formed with a structure having a reinforcing piece 15, and a separate resistance protrusion 2 is attached to the reinforcing piece 15, or the reinforcing piece 15 itself is processed in advance to form a resistance protrusion. 2, and by forming a claw piece 21 on the tip side, the cross section of the member at least around the tip is made larger, so that it can resist the resistance of earth and sand. The resistance protrusion 2 can be formed to serve as a reinforcement for the plow body 1, which is easily deformed by the process, and not only is it easier to manufacture, but also the rear end of the reinforcing piece 15 can be used to extend to a predetermined range behind the plow body 1. It also has the excellent feature that it is easy to realize a structure that restricts the rotation of the shaft.

Next, since the earth and sand digging chisel and sampling bucket equipped with this plow device are those in which the characteristic plow device as described above is combined in the front near the lower end of the opening 41, the features shown in FIGS. As shown in the cross-sectional diagram showing the process, the cutting edge can be reliably placed on the ground 8 of any type of soil.
In addition, the excavated earth and sand smoothly rises above the plow chisel face 11 and is taken into the bucket 4, ensuring smooth and reliable extraction of earth and sand. Therefore, it is said that it will greatly simplify various tasks such as not only leveling fields, but also forming ditches to encourage drainage, and collecting soil for seedlings from fields. It exhibits excellent characteristics.

In particular, the opening 41 is formed in a structure that is restricted to a position spanning the front wall 42 and the bottom plate 43 of the bucket 5, and the plow device of the present invention is mounted in the front near the lower end of the opening 4. In this case, the distance from the ground 8 to the opening 41 is shortened, and the plow body 1 itself can be made extremely compact, which makes it possible to provide it at a lower cost. The resistance from the earth and sand that the bucket receives can be reduced by shortening the section that receives frictional resistance, and the rise of earth and sand into the bucket becomes smoother, which naturally reduces the chance of damage and prevents damage to the front wall 42 or bottom plate 43. Compared to a structure in which an opening 41 is formed, it is possible to realize an advantageous structure in which the direction in which earth and sand are taken into the bucket 4 is in a very natural shape.

This effect changes the shape of the plow body 1 so that the planar shape of the plow chisel surface 11 is approximately trapezoidal, one tip of which is set back from the other tip, and the side edge of the retreated side In the case where the side piece 12 that continues from the tip to the rear end is formed, and the side piece 13 that does not reach from the tip to the rear end is formed on the opposite side edge, it is asymmetrical. Side piece 1 that does not reach the rear end so that the soil that is scooped up is twisted from the side where the tip retreats.
This is because the resistance can be reduced by scooping up the object in a way that it rises biased toward the third side, and is then regulated by that piece 13, and then twists and rises to the opposite side piece 12 that has reached the rear end. , becomes even more remarkable.

As mentioned above, the plow device of the present invention is configured so that the plow body can freely rotate up to a predetermined range rearward in the front-rear direction with respect to the plow digging surface, so that when the plow device is not in use, When handling the plow, the cutting edge of the plow body will not accidentally stick into the ground and become a hindrance, realizing an extremely easy-to-handle plow device. It performs the most important function as a plow device, which is to be able to reliably drive the cutting edge into the ground in any type of soil, making it an extremely practical plow device. ing.

In addition, the bucket to which this plow device is attached takes advantage of the characteristics of the plow device described above, and also makes the extraction of soil extremely smooth, making it suitable for agricultural work, especially field leveling work and trench digging work. Since it is extremely easy to implement, it is expected that it will greatly contribute to improving the efficiency of agricultural work.

[Brief explanation of drawings]

The drawings are based on representative embodiments of the present invention; FIG. 1 is an overall perspective view of the plow, FIG. 2 is a plan view, FIG. 3 is a rear view, and FIG. The figures are the same side view, FIG. 5 is a sectional view showing the initial usage state of another embodiment, and FIG.
The figure is a sectional view showing one use process connected to Fig. 5, Fig. 7 is a sectional view showing one use process connected to Fig. 6, Fig. 8 is an overall perspective view of the bucket bag, and Fig. 9 is a FIG. 10 is a central vertical sectional view showing the initial usage process; FIG. 10 is a central vertical sectional view showing the first usage process, which is connected to FIG.
FIG. 3 is a central vertical cross-sectional view showing the process of use. 1...Plow body, 11...Plow digging chisel surface, 1
2, 13... Same side piece, 14... Same pivot tube, 15...
...Same reinforcement piece, 2...Resistance protrusion, 21...Same claw piece,
3... Horizontal rod, 4... Bucket, 41... Same opening, 42... Same front wall, 43... Same bottom plate, 5... Bucket support frame, 6... Stopper gripping rod, 7...
...Agricultural tractor three-point link lower link,
8...Ground.

Claims (1)

[Scope of Claims] 1. On the back of the plow main body which is pivotally mounted and supported so that rotation to a predetermined rear position in the front-rear direction with respect to the plow chisel surface is at least freely regulated;
A plow device comprising a protruding resistance protrusion which is made of a rod-shaped member or the like and whose cross-sectional dimension is larger than the thickness of the material constituting the plow main body. 2. The shape of the plow body described in claim 1 is defined as such that the planar shape of the plow cutting surface is approximately trapezoidal, one tip of which is set back from the other tip, and the receded side The plow body is asymmetrical, with a side piece extending from the tip to the rear end on the side edge of the plow, and a side piece that does not reach from the tip to the rear end on the opposite side edge. Plow equipment consisting of 3 At the front near the lower end of the opening formed in the bucket to be connected to the rear of the agricultural tractor, the opening is regulated so that it can at least freely rotate to a predetermined rear position in the front-rear direction with respect to the plow chisel surface. A plow device is attached to the rear surface of the plow body, which is pivoted and supported, and has a protruding resistance protrusion made of a rod-shaped material with a cross-sectional dimension larger than the thickness of the material constituting the plow body, with a larger cross-section at least around the tip. It consists of a sand digging chisel and a bucket for collecting soil. 4. The bucket to be connected to the rear of the agricultural tractor as set forth in claim 3 is an L-shaped or substantially L-shaped bucket in longitudinal section having at least a front wall and a bottom plate, and the opening is formed in the front wall. An earth and sand digging chisel, and a bucket for collecting soil, which are regulated at the point where it straddles the bottom plate.