JPH0130970Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a hole-digging device for use in orchards, etc., for digging holes between fruit trees or crops in orchards, and cultivating the holes deeply.

[Conventional technology]

In orchards and perennial crop cultivation fields,
Well-known trenchers and subsoil crushers are used to deeply plow and dig holes between fruit trees and crops (rows).

[Problem that the invention attempts to solve]

However, roots of fruit trees or crops protrude deep between the furrows of fruit trees or crops, and trenchers and subsoil crushers work continuously from one side of the furrow to the other; In some cases, the roots of trees were severed, which had a negative impact on fruit trees and crops. Furthermore, since continuous deep plowing and hole digging are performed, it is difficult to simultaneously apply compost or the like to deep layers. Furthermore, there was no suitable digging machine for replanting fruit trees, mulberries, tea, etc.

[Means to solve the problem]

Therefore, in the present invention, a linear spiral digging blade is attached to a vertical rotating shaft, and rotates at approximately a predetermined pitch along an imaginary cylinder, and by rotating the rotating shaft in the normal direction, the spiral digging blade is inserted into the soil. In a hole digging device that extracts a spiral digging blade that has entered the soil by digging or reversing the rotation axis, the spiral digging blade is dug into the soil and continues to spiral along with the surrounding soil. It is characterized by being provided with a lifting mechanism that lifts up the blade to dig a hole or lowers the lifted spiral digging blade.

[Effect]

With this configuration, vertical circular holes can be easily dug at appropriate positions between furrows in orchards and perennial crop cultivation fields without damaging the roots. Compost, etc. can be applied to the bottom, and backfilling can be easily performed.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a horizontal frame attached to an agricultural tractor (not shown);
The upper end of a slide rod 2 is fixed to the outer end of this horizontal frame 1 and is suspended. One end of a horizontally extending support plate 4 is fixed to the slider 3 inserted through the slide rod 2, and the other end of this support plate 4 has a
A hydraulic motor 5 is mounted on the upper surface, and its output shaft passes through the support plate 4 to the lower surface.
A linear spiral digging blade 6 is attached which is spirally formed at approximately a predetermined pitch along the imaginary cylinder. The support plate 4 between the hydraulic motor 5 and the slider 3 includes
A piston rod 8a of a hydraulic cylinder 8 is pivotally mounted via a bracket 7. The upper end of the hydraulic cylinder 8 is supported by the agricultural tractor side. Then, the piston rod 8 of the hydraulic cylinder 8 is rotated while the spiral digging blade 6 is rotated in the normal direction by the hydraulic motor 5.
By extending a, the spiral digging blade 6 penetrates deeply into the soil, and while reversing the spiral digging blade 6,
By contracting the hydraulic cylinder 8, the spiral digging blade 6
can be extracted from the soil. Furthermore, when the hydraulic cylinder 8 is contracted without rotating the spiral digging blade 6 with the spiral digging blade 6 penetrating into the soil to a predetermined depth as shown in FIG. 6, the clod S is excavated and the hole H can be formed. A hole-digging device having such a configuration is introduced between fruit trees in an orchard, between rows of perennial crops, in tea gardens, mulberry gardens, etc., and deeply plows and digs holes in desired locations.
When the support plate 4 is lowered by the hydraulic cylinder 8 while the spiral digging blade 6 is rotated by the hydraulic motor 5, the state shown in FIG. 1 changes from the state shown in FIG. 1 to the state shown in FIG. At this time, when the rotation of the hydraulic motor 5 is stopped and the hydraulic cylinder 8 is contracted in this state, the clod S is lifted up together with the spiral digging blade 6, and a hole H is formed in the field.
At this time, even if the roots of fruit trees or crops extend into the hole H and the soil clod S, the cutting blade 6 is made of thin wire, so it will not directly damage the roots.
When the soil clod S is pulled up, the roots are pulled out and placed in the hole H.
Since it remains inside and is not cut, there is little damage. Further, from the state shown in FIG. 2, when the hydraulic cylinder 8 is contracted while the spiral digging blade 6 is reversed by the hydraulic motor 5, only deep plowing is performed without lifting the clod S. As shown in FIG. 3, the soil clod S is lifted up by the spiral digging blade 6. At the bottom of the hole H, as shown in FIG.
After turning, the hydraulic cylinder 8 is extended to return the clod S to the hole H, and the hydraulic cylinder 8 is contracted while the spiral digging blade 6 is reversed by the hydraulic cylinder 5, as shown in FIG. , deep fertilization can be performed along with hole digging. Furthermore, as shown in FIG. 3, the hole digging device is moved with the soil clod 6 lifted up by the spiral digging blade 6 to form a hole H, trees such as fruit trees, mulberry trees, and tea trees are transplanted into the hole H, and the soil clod S If the soil is backfilled, seedlings or adult trees can be transplanted or replanted. Note that the above-mentioned hole digging device is not limited to the tractor-mounted type, but can be similarly implemented in other types such as a self-propelled type or a portable type.

[Effect of the idea]

As explained above, according to the hole digging device for orchards, etc. of the present invention, the hydraulic cylinder 8 is contracted while the spiral digging blade 6 is digging into the soil, and the spiral digging blade 6 is
The soil (soil clod) S is lifted up with the surrounding soil (soil clod) S to form a hole H, and the soil clod S is backfilled. It is possible to selectively dig a hole in a desired location, such as between the furrows of the soil, and to perform deep plowing and deep turning of compost. In addition, since the spiral digging blade 6 is made of a thin wire, it is possible to dig holes and cultivate deeply without damaging the overhanging roots. Furthermore, seedlings and adult trees can be transplanted into the dug holes, and new plantings can be made.
Replanting can be done easily.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
5 through 5 are explanatory diagrams of the operation. 1...Horizontal frame, 2...Sliding rod, 3...
Slider, 4...Support plate, 5...Hydraulic motor, 6
...Spiral digging blade, 7...Bracket, 8...Hydraulic cylinder, 8a...Piston rod, S...Soil clod, 11...Hole, C...Compost.

Claims (1)

[Scope of utility model registration request] A linear spiral digging blade that rotates at approximately a predetermined pitch along a virtual cylinder is attached to a vertical rotating shaft, and by rotating the rotating shaft in the normal direction, the spiral digging blade is made to dig into the soil or rotate. In a hole digging device that extracts a spiral digging blade that has entered the soil by reversing the axis, the spiral digging blade is lifted up together with the surrounding soil while the spiral digging blade has dug into the soil. A hole digging device for orchards, etc., characterized by being provided with a lifting mechanism for lowering a spiral digging blade that is used to dig a hole or to lower a lifted spiral digging blade.