JPH0441763Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a deep-cultivation auger device used to lift soil in deep layers of cultivated land upward and turn the soil upside down.

(Conventional technology and its solutions) Conventional auger devices equipped with spiral blades are known and have been put into practical use, but the ability to crush soil clods is insufficient and the excavated soil cannot be finely crushed. ,
There was a problem that it tended to remain lumpy.

(Means for Solving the Problems) However, in this invention, two deep-cultivating auger rods are installed side by side with cutting blades protruding outward at approximately equal intervals from the edge of the spiral blade, and the auger rods have a double shaft inside and outside. A bit is fixed to the lower end of the inner shaft to create an auger device.Using this auger device, it becomes possible to crush soil clods with the cutting blade, which solves the problems of the conventional method. be.

That is, this invention is a device in which two auger rods each having a spiral blade are arranged side by side, and the shaft of the auger rod has a hollow shaft to which the spiral blade is fixed on the outside;
an inner shaft that is fitted into the hollow shaft and has a bit fixed at its tip; cutting blades are provided outwardly protruding from the edges of the spiral blades at predetermined intervals; and two spiral blades of the auger rod are provided. are deep-cultivation auger devices characterized by the fact that they are stacked on top of each other. Further, the protruding direction of the cutting blade is the tangential direction of the spiral blade.

(Operation) According to this invention, it is possible not only to effectively crush the earth clod, but also to turn the earth clod upside down.

(Example) This invention will be described below based on an example shown in the drawings.

A shaft 3 of the auger rod is composed of a hollow shaft 1 and an inner shaft 2 fitted into the hollow shaft, and a spiral blade 4 is provided on the outside of the hollow shaft 1 over almost the entire length. A plurality of cutting blades 5 are protruded from the periphery of the spiral blade 4 at predetermined intervals.

The cutting blade 5 is a plate with a thin tip, and extends along the tangential direction of the spiral blade 4 and toward the axis 3.
It is attached toward the tip of the

The length of the shaft 3 should be determined as appropriate, but if it is 1 m to 1.5 m, even if the deep part is hardened and becomes an impermeable layer, such as a reclaimed land or a clay layer, it is difficult to drain water. The impermeable layer can be crushed.

An auger bit 6 is attached to the tip of the inner shaft 2 of the auger rod A shown in the above embodiment, and two auger bits are installed in parallel on a rotary power device 7 to constitute a deep cultivation auger device.

The configuration of the rotary power device 7 is as follows.
Motor (hydraulic motor) on one side of casing 8
9 is attached, and rotation transmission shafts 11 and 12 are provided parallel to the shaft 10 of the motor 9 at a predetermined interval. The transmission shafts 11 and 12 are hollow outer shafts 11
a, 12a and an inner shaft 1 with its upper end protruding.
1b and 12b, and the outer shaft 11
A, 12a and inner shafts 11b, 12b are each equipped with a gear (the gear on the outer shaft is smaller than the gear on the inner shaft). A gear 13 on the outer shaft 11a is interlocked with a gear 14 attached to the shaft 10 of the motor, and also interlocked with a gear 16 on the outer shaft 12a.
Further, the gear 17 of the inner shaft 11b is interlocked with a gear 18 attached to the shaft 10 of the motor, and
It is interlocked with the gear 20 of the inner shaft 12b.

Auger rods A are attached to the transmission shafts 11 and 12, respectively.
The structure for connecting the shafts 3 is, for example, the outer shafts 11a, 1
Fit the hollow shaft 1 of the auger rod A into the shaft 2a and secure it with bolts 21, and also the inner shafts 11b and 12b.
The distal end thereof has a polygonal cross-section, and the structure is such that the distal end thereof is fitted into the base end of the inner shaft 2, which has a cross-sectional shape similar to this.

In the above, the distance between the transmission shafts 11 and 12 is such that the spiral blades of the two auger rods A fixed thereto slightly overlap.

When the deep cultivation device is assembled as described above and the shaft 10 of the motor 9 is rotated in the direction of arrow 22 in FIG. 1, the rotation is transmitted to the two auger rods A and A via the transmission shafts 11 and 12 1st each
It rotates in the directions of arrows 23 and 24 in FIGS. However, I grabbed the handle 25 and turned the auger rods A and A.
If you hold it vertically and hit it against the ground and rotate it, Auger Bit 6 will dig into the soil. The excavated soil moves upward along the upper surface of the spiral blade 4, and during this time, air is contained in the soil and the cultivated land is turned over.

According to the auger rod A, since the cutting blade 5 is provided, the cutting blade 5 can crush the clod of soil on the peripheral wall of the excavation hole, and a large amount of air can be included in the soil. Furthermore, as shown in the above embodiment, if two auger rods are rotated facing each other in slightly overlapping positions, it is possible to lift a large amount of soil from deep layers, and at the overlapped part, the soil clods are removed by the cutting blade. It is twisted and crushed.

According to the above embodiment, since the shaft of the auger rod A is composed of a hollow shaft and an inner shaft, the number of rotations of the auger bit 6 attached to the inner shaft and the number of rotations of the helical blade attached to the intermediate shaft can be made different. I can do it. That is, if the rotation speed of the spiral blade is increased by selecting the gear ratio as shown in the above embodiment, upward movement of the soil can be promoted.

(Effect of the invention) That is, according to this invention, since the cutting blade is provided protruding from the edge of the spiral blade, the clod of soil can be destroyed by the cutting blade. Therefore, there is an effect that a large amount of air can be contained in the soil compared to the conventional method. In addition, even if the soil is hard, it can be effectively crushed and the purpose of deep plowing can be easily achieved.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view of the embodiment of this invention, Figure 2 is an enlarged perspective view of the cutting blade, and Figure 3 is a partially cutaway front view of the embodiment of this invention.
The figure is a bottom view with the power unit omitted, and FIG. 4 is a sectional view showing the structure for attaching it to the transmission shaft. 1...Hollow shaft, 2...Inner shaft, 3...Shaft, 4...
Spiral blade, 5... Cutting blade, 6... Auger bit, 7
...Rotating power device, A...Auger rod.

Claims (1)

[Claims for Utility Model Registration] (1) In a device in which two auger rods provided with spiral blades are installed in parallel, the axis of the auger rod is
It consists of a hollow shaft that fixes a helical blade on the outside, and an inner shaft that is inserted into the hollow shaft and fixes a bit at the tip, and cutting blades are protruded outward at predetermined intervals from the edge of the helical blade. In addition, the auger device for deep cultivation is characterized in that the spiral blades of the two auger rods are stacked on top of each other. (2) The deep-cultivation auger device according to claim 1, wherein the protruding direction of the cutting blade is the tangential direction of the helical blade.