JPH09220034A - Root cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the root cutter, having plural discoid cutting blades fitted to a working body fitting shaft, which is easily steered and has a tight turning circle and cuts the root of a tree sharply with a small force. SOLUTION: The working machine which has the horizontal working body fitting shaft 20 has one or plural discoid cutting blades 24 fitted to the working body fitting shaft 20 at specific intervals. The working body fitting shaft 20 is driven by central drive systems which projects on both the sides of a power transmission cable, and the cutting blades 24 are preferably fitted to both the projection parts to substitute for travel wheels.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a root cutting machine for cutting roots of trees.

[0002]

2. Description of the Related Art If the roots of trees of fruit trees that have grown to some extent are cut off midway, new roots appear and the absorbability of water and nutrients is improved. Therefore, although root cutting is performed at an appropriate time, conventionally, there is no suitable device for mechanically performing this.
I used a backhoe and a trencher to cut the roots.

[0003]

However, since these devices cut roots so as to scrape them off, they impose a burden on the roots and the quality and shape of the cuts are poor, impairing the growth of new roots. In addition, since these devices are large and heavy, they are very inconvenient to deal with gardens of various terrain. The present invention addresses such drawbacks, and is designed to cut the root with a rotating cutting blade.

[0004]

SUMMARY OF THE INVENTION Under the above problems, the present invention is directed to a working machine having a horizontal work body mounting shaft, in which one or a plurality of disc-shaped cutting pieces are spaced from the work body mounting shaft. The present invention provides a root cutting machine characterized by having a blade attached.

Further, according to the present invention, in the above structure, the work body mounting shaft is driven by a center drive system in which both sides of the transmission case are projected, and the cutting blade is mounted on both projecting portions thereof. , And a root cutting machine in which the cutting blade substitutes the running wheel.

[0006]

Embodiments of the present invention will be described below. The root cutting machine according to the present invention can be applied to any work machine as long as it has a horizontal work body mounting shaft (hereinafter referred to as a mounting shaft). Specifically, a tractor-pulled rotary or a walk-type cultivator can be considered. A disc-shaped cutting blade may be attached to these attachment shafts.

This disc-shaped cutting blade (hereinafter referred to as the cutting blade)
Can be any as long as it can cut the root, but generally, a saw blade formed on the outer periphery will be suitable. In this sense, the cutting blade of a portable brush cutter may be diverted. Further, the cutting blade to be attached may be one piece or plural pieces.

Further, considering the mounting operation of the cutting blade, a center drive type in which the mounting shaft projects at both ends of the transmission case would be suitable.

The root cutting operation may be carried out by attaching such a cutting blade to the mounting shaft and rotating the cutting blade to move around the tree so that the cutting blade cuts the root in the ground.

It seems that the most suitable of the above root cutting machines is a management machine type in which the cutting blade is used as a running wheel. FIG. 1 is a side view of this type of root cutting machine, and FIG. 2 is a front view of this type of root cutting machine.
The transmission cylinder 12 is connected below the engine 10,
The transmission case 14 is attached to the tip of the steering wheel, and the steering handle 16 is extended from the transmission cylinder 12 rearward.

The transmission cylinder 12 accommodates a drive shaft 18 connected to the output shaft of the engine 10 via a centrifugal clutch and a reduction mechanism (not shown). The power of the drive shaft 18 is transmitted to the transmission case 14. It is transmitted to the mounting shaft 20 supported. FIG. 3 is an explanatory view showing the transmission mechanism, but since the mounting shaft 20 is mounted at right angles to the drive shaft 18 in a form in which both ends of the mounting shaft 20 project from the transmission case 14 to the left and right, It is assembled by the bevel gear mechanism 22 or the like.

FIG. 4 is an explanatory view showing another transmission mechanism, but in the present example, the direction change of the driving force between the drive shaft 18 and the mounting shaft 20 is changed to a worm 23a attached to the drive shaft 18. Worm wheel 2 mounted on the mounting shaft 20
3b and the worm mechanism 23.
Since the worm mechanism 23 can have a large reduction ratio, there is an advantage that the output speed of the engine 10 does not have to be reduced by another reduction mechanism.

Cutting blades 24 are attached to both projecting portions of the mounting shaft 20. FIG. 5 is an explanatory view showing a mounting state of the cutting blade 24. In short, the cutting blade 24 is fitted into the mounting shaft 20 projecting on both sides of the transmission case 14, and the nut 2 or the like is attached.
Tighten with 6. At this time, since the cutting blade 24 may slide on the mounting shaft 20, fitting with a key, a spline or the like is unnecessary. However, since a certain tightening force is required, it is preferable to use a disc spring type nut 28 or the like. If such an attachment method is adopted, two cutting blades 24 are attached at a predetermined interval.

FIG. 6 is an explanatory view showing a working state of the root cutting machine as described above. If the cutting blade 24 is moved around the tree while being driven, the cutting blade 24 causes the cutting machine 24 to run and at the same time. The working root 30 is cut off. Since this type of root cutting machine is very small and compact,
No matter what the terrain or tree form of the garden is, it can be easily adapted to it.

FIG. 7 is a cross-sectional view of the ground after moving such a root cutting machine, but two grooves 32 are formed on the ground after moving the root cutting machine. . Therefore,
When the soil is dug up with a hoe or a plow, it can be used as a trench excavator for easily excavating a groove having a rectangular cross section whose bottom surface is a line A connecting the lower ends of the grooves 32. In addition, it can be expected to be used as a cutting machine for cutting stems, vines, roots, etc. of crops and weeds that crawl underground.

[0016]

As described above, according to the present invention, since the root is cut by the rotating cutting blade, the root can be cut neatly and the new root grows well. If a cutting blade is used as a management machine type in which the traveling wheels are substituted, a suitable root cutting machine that can be easily operated and can make a small turn can be revealed.

[Brief description of drawings]

FIG. 1 is a side view of a root cutter showing an example of the present invention.

FIG. 2 is a front view of a root cutting machine showing an example of the present invention.

FIG. 3 is an explanatory diagram of a transmission mechanism of the root cutting machine showing an example of the present invention.

FIG. 4 is an explanatory diagram of a transmission mechanism of the root cutting machine showing an example of the present invention.

FIG. 5 is an explanatory view showing the mounting of the cutting blade of the root cutting machine showing an example of the present invention.

FIG. 6 is an explanatory view of a usage state of the root cutting machine showing an example of the present invention.

FIG. 7 is a cross-sectional view of the ground after using the root cutting machine according to the example of the present invention.

[Explanation of symbols]

 14 Transmission Case 20 Workpiece Attachment Shaft 24 Disc Cutting Blade

Claims (3)

[Claims] 1. A root cutting machine having a horizontal work body mounting shaft, wherein one or a plurality of disc-shaped cutting blades spaced at predetermined intervals are mounted on the work body mounting shaft. 2. The root cutting machine according to claim 1, wherein the work body mounting shaft is driven by a center drive system in which both sides of the transmission case are projected, and the cutting blades are mounted on both projecting portions thereof. 3. The root-cutting machine according to claim 1, wherein the cutting blade substitutes a traveling wheel.